//
//  AHReach.h
//
//  Copyright (c) 2012 Auerhaus Development, LLC
//  
//  Permission is hereby granted, free of charge, to any person obtaining a 
//  copy of this software and associated documentation files (the "Software"), 
//  to deal in the Software without restriction, including without limitation 
//  the rights to use, copy, modify, merge, publish, distribute, sublicense, 
//  and/or sell copies of the Software, and to permit persons to whom the 
//  Software is furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included 
//  in all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 
//  IN THE SOFTWARE.
//  

#import <Foundation/Foundation.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#define kAHReachDefaultHost "www.baidu.com"    //host 地址

@class AHReach;

typedef void (^AHReachChangedBlock)(AHReach *);

@interface AHReach : NSObject

+ (AHReach *)reachForHost:(NSString *)host;
+ (AHReach *)reachForAddress:(const struct sockaddr_in *)addr;
+ (AHReach *)reachForDefaultHost;

- (BOOL)isReachable;
- (BOOL)isReachableViaWWAN;
- (BOOL)isReachableViaWiFi;

- (void)startUpdatingWithBlock:(AHReachChangedBlock)changedBlock;
- (void)stopUpdating;

@end
